$Date: 2010/09/10 06:41:06 $
$Author: faust $
*/
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <unistd.h>
+
+#include "cap_nf.h"
+
+#include "stg/common.h"
+#include "stg/raw_ip_packet.h"
+#include "stg/traffcounter.h"
+
+#include <vector>
#include <csignal>
#include <cerrno>
#include <cstring>
-#include <vector>
-
-#include "stg/common.h"
-#include "stg/raw_ip_packet.h"
-#include "stg/traffcounter.h"
-#include "cap_nf.h"
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
-class CAP_NF_CREATOR {
-public:
- CAP_NF_CREATOR()
- : nf(new NF_CAP())
- {
- }
+namespace
+{
- ~CAP_NF_CREATOR()
- {
- delete nf;
- }
+struct NF_HEADER {
+ uint16_t version; // Protocol version
+ uint16_t count; // Flows count
+ uint32_t uptime; // System uptime
+ uint32_t timestamp; // UNIX timestamp
+ uint32_t nsecs; // Residual nanoseconds
+ uint32_t flowSeq; // Sequence counter
+ uint8_t eType; // Engine type
+ uint8_t eID; // Engine ID
+ uint16_t sInterval; // Sampling mode and interval
+};
+
+struct NF_DATA {
+ uint32_t srcAddr; // Flow source address
+ uint32_t dstAddr; // Flow destination address
+ uint32_t nextHop; // IP addres on next hop router
+ uint16_t inSNMP; // SNMP index of input iface
+ uint16_t outSNMP; // SNMP index of output iface
+ uint32_t packets; // Packets in flow
+ uint32_t octets; // Total number of bytes in flow
+ uint32_t timeStart; // Uptime on first packet in flow
+ uint32_t timeFinish;// Uptime on last packet in flow
+ uint16_t srcPort; // Flow source port
+ uint16_t dstPort; // Flow destination port
+ uint8_t pad1; // 1-byte padding
+ uint8_t TCPFlags; // Cumulative OR of TCP flags
+ uint8_t proto; // IP protocol type (tcp, udp, etc.)
+ uint8_t tos; // IP Type of Service (ToS)
+ uint16_t srcAS; // Source BGP autonomous system number
+ uint16_t dstAS; // Destination BGP autonomus system number
+ uint8_t srcMask; // Source address mask in "slash" notation
+ uint8_t dstMask; // Destination address mask in "slash" notation
+ uint16_t pad2; // 2-byte padding
+};
+
+#define BUF_SIZE (sizeof(NF_HEADER) + 30 * sizeof(NF_DATA))
- NF_CAP * GetCapturer() { return nf; }
-private:
- NF_CAP * nf;
-} cnc;
+}
-PLUGIN * GetPlugin()
+extern "C" STG::Plugin* GetPlugin()
{
-return cnc.GetCapturer();
+ static NF_CAP plugin;
+ return &plugin;
}
NF_CAP::NF_CAP()
: traffCnt(NULL),
- tidTCP(0),
- tidUDP(0),
runningTCP(false),
runningUDP(false),
stoppedTCP(true),
portT(0),
portU(0),
sockTCP(-1),
- sockUDP(-1)
-{
-}
-
-NF_CAP::~NF_CAP()
+ sockUDP(-1),
+ logger(STG::PluginLogger::get("cap_nf"))
{
}
int NF_CAP::ParseSettings()
{
-std::vector<PARAM_VALUE>::iterator it;
+std::vector<STG::ParamValue>::iterator it;
for (it = settings.moduleParams.begin(); it != settings.moduleParams.end(); ++it)
{
- if (it->param == "TCPPort")
+ if (it->param == "TCPPort" && !it->value.empty())
{
if (str2x(it->value[0], portT))
{
}
continue;
}
- if (it->param == "UDPPort")
+ if (it->param == "UDPPort" && !it->value.empty())
{
if (str2x(it->value[0], portU))
{
runningUDP = false;
CloseUDP();
errorStr = "Cannot create UDP thread";
+ logger("Cannot create UDP thread.");
printfd(__FILE__, "Error: Cannot create UDP thread\n");
return -1;
}
{
runningTCP = false;
CloseTCP();
+ logger("Cannot create TCP thread.");
errorStr = "Cannot create TCP thread";
printfd(__FILE__, "Error: Cannot create TCP thread\n");
return -1;
CloseUDP();
for (int i = 0; i < 25 && !stoppedUDP; ++i)
{
- usleep(200000);
+ struct timespec ts = {0, 200000000};
+ nanosleep(&ts, NULL);
}
if (stoppedUDP)
{
if (pthread_kill(tidUDP, SIGUSR1))
{
errorStr = "Error sending signal to UDP thread";
+ logger("Error sending sugnal to UDP thread.");
printfd(__FILE__, "Error: Error sending signal to UDP thread\n");
return -1;
}
printfd(__FILE__, "UDP thread NOT stopped\n");
+ logger("Cannot stop UDP thread.");
}
}
if (portT && !stoppedTCP)
CloseTCP();
for (int i = 0; i < 25 && !stoppedTCP; ++i)
{
- usleep(200000);
+ struct timespec ts = {0, 200000000};
+ nanosleep(&ts, NULL);
}
if (stoppedTCP)
{
if (pthread_kill(tidTCP, SIGUSR1))
{
errorStr = "Error sending signal to TCP thread";
+ logger("Error sending signal to TCP thread.");
printfd(__FILE__, "Error: Error sending signal to TCP thread\n");
return -1;
}
printfd(__FILE__, "TCP thread NOT stopped\n");
+ logger("Cannot stop TCP thread.");
}
}
return 0;
if (sockUDP <= 0)
{
errorStr = "Error opening UDP socket";
+ logger("Cannot create UDP socket: %s", strerror(errno));
printfd(__FILE__, "Error: Error opening UDP socket\n");
return true;
}
if (bind(sockUDP, (struct sockaddr *)&sin, sizeof(sin)))
{
errorStr = "Error binding UDP socket";
+ logger("Cannot bind UDP socket: %s", strerror(errno));
printfd(__FILE__, "Error: Error binding UDP socket\n");
return true;
}
if (sockTCP <= 0)
{
errorStr = "Error opening TCP socket";
+ logger("Cannot create TCP socket: %s", strerror(errno));
printfd(__FILE__, "Error: Error opening TCP socket\n");
return true;
}
if (bind(sockTCP, (struct sockaddr *)&sin, sizeof(sin)))
{
errorStr = "Error binding TCP socket";
+ logger("Cannot bind TCP socket: %s", strerror(errno));
printfd(__FILE__, "Error: Error binding TCP socket\n");
return true;
}
if (listen(sockTCP, 1))
{
errorStr = "Error listening on TCP socket";
+ logger("Cannot listen on TCP socket: %s", strerror(errno));
printfd(__FILE__, "Error: Error listening TCP socket\n");
return true;
}
void * NF_CAP::RunUDP(void * c)
{
+sigset_t signalSet;
+sigfillset(&signalSet);
+pthread_sigmask(SIG_BLOCK, &signalSet, NULL);
+
NF_CAP * cap = static_cast<NF_CAP *>(c);
-uint8_t buf[BUF_SIZE];
-int res;
-struct sockaddr_in sin;
-socklen_t slen;
cap->stoppedUDP = false;
while (cap->runningUDP)
{
- if (!cap->WaitPackets(cap->sockUDP))
+ if (!WaitPackets(cap->sockUDP))
{
continue;
}
// Data
- slen = sizeof(sin);
- res = recvfrom(cap->sockUDP, buf, BUF_SIZE, 0, reinterpret_cast<struct sockaddr *>(&sin), &slen);
+ struct sockaddr_in sin;
+ socklen_t slen = sizeof(sin);
+ uint8_t buf[BUF_SIZE];
+ ssize_t res = recvfrom(cap->sockUDP, buf, BUF_SIZE, 0, reinterpret_cast<struct sockaddr *>(&sin), &slen);
if (!cap->runningUDP)
break;
+ if (res < 0)
+ {
+ cap->logger("recvfrom error: %s", strerror(errno));
+ continue;
+ }
+
if (res == 0) // EOF
{
continue;
void * NF_CAP::RunTCP(void * c)
{
+sigset_t signalSet;
+sigfillset(&signalSet);
+pthread_sigmask(SIG_BLOCK, &signalSet, NULL);
+
NF_CAP * cap = static_cast<NF_CAP *>(c);
-uint8_t buf[BUF_SIZE];
-int res;
-int sd;
-struct sockaddr_in sin;
-socklen_t slen;
cap->stoppedTCP = false;
while (cap->runningTCP)
{
- if (!cap->WaitPackets(cap->sockTCP))
+ if (!WaitPackets(cap->sockTCP))
{
continue;
}
// Data
- slen = sizeof(sin);
- sd = accept(cap->sockTCP, reinterpret_cast<struct sockaddr *>(&sin), &slen);
+ struct sockaddr_in sin;
+ socklen_t slen = sizeof(sin);
+ int sd = accept(cap->sockTCP, reinterpret_cast<struct sockaddr *>(&sin), &slen);
if (!cap->runningTCP)
break;
if (sd <= 0)
{
- if (errno != EINTR)
- {
- cap->errorStr = "Error accepting connection";
- printfd(__FILE__, "Error: Error accepting connection\n");
- }
+ if (sd < 0)
+ cap->logger("accept error: %s", strerror(errno));
continue;
}
- if (!cap->WaitPackets(sd))
+ if (!WaitPackets(sd))
{
close(sd);
continue;
}
- res = recv(sd, buf, BUF_SIZE, MSG_WAITALL);
+ uint8_t buf[BUF_SIZE];
+ ssize_t res = recv(sd, buf, BUF_SIZE, MSG_WAITALL);
+
+ if (res < 0)
+ cap->logger("recv error: %s", strerror(errno));
+
close(sd);
if (!cap->runningTCP)
// Need to check actual data length and wait all data to receive
if (res < 24)
{
- if (errno != EINTR)
- {
- cap->errorStr = "Invalid data received";
- printfd(__FILE__, "Error: Invalid data received through TCP\n");
- }
continue;
}
return NULL;
}
-void NF_CAP::ParseBuffer(uint8_t * buf, int size)
+void NF_CAP::ParseBuffer(uint8_t * buf, ssize_t size)
{
-RAW_PACKET ip;
+STG::RawPacket ip;
NF_HEADER * hdr = reinterpret_cast<NF_HEADER *>(buf);
if (htons(hdr->version) != 5)
{
{
NF_DATA * data = reinterpret_cast<NF_DATA *>(buf + 24 + i * 48);
- ip.header.ipHeader.ip_v = 4;
- ip.header.ipHeader.ip_hl = 5;
- ip.header.ipHeader.ip_p = data->proto;
+ ip.rawPacket.header.ipHeader.ip_v = 4;
+ ip.rawPacket.header.ipHeader.ip_hl = 5;
+ ip.rawPacket.header.ipHeader.ip_p = data->proto;
ip.dataLen = ntohl(data->octets);
- ip.header.ipHeader.ip_src.s_addr = data->srcAddr;
- ip.header.ipHeader.ip_dst.s_addr = data->dstAddr;
- ip.header.sPort = data->srcPort;
- ip.header.dPort = data->dstPort;
-
- traffCnt->Process(ip);
- }
-}
-
-bool NF_CAP::WaitPackets(int sd) const
-{
-fd_set rfds;
-FD_ZERO(&rfds);
-FD_SET(sd, &rfds);
-
-struct timeval tv;
-tv.tv_sec = 0;
-tv.tv_usec = 500000;
+ ip.rawPacket.header.ipHeader.ip_src.s_addr = data->srcAddr;
+ ip.rawPacket.header.ipHeader.ip_dst.s_addr = data->dstAddr;
+ ip.rawPacket.header.sPort = data->srcPort;
+ ip.rawPacket.header.dPort = data->dstPort;
-int res = select(sd + 1, &rfds, NULL, NULL, &tv);
-if (res == -1) // Error
- {
- if (errno != EINTR)
- {
- printfd(__FILE__, "Error on select: '%s'\n", strerror(errno));
- }
- return false;
+ traffCnt->process(ip);
}
-
-if (res == 0) // Timeout
- {
- return false;
- }
-
-return true;
}
git.stg.codes / stg.git / blobdiff